Bulletin of the American Physical Society
APS March Meeting 2019
Volume 64, Number 2
Monday–Friday, March 4–8, 2019; Boston, Massachusetts
Session B30: Liquid Crystals I
11:15 AM–2:15 PM,
Monday, March 4, 2019
BCEC
Room: 162B
Sponsoring
Unit:
GSOFT
Chair: Cristina Martin Linares, Johns Hopkins University
Abstract: B30.00013 : Liquid Crystals and the Optical Theorem*
1:39 PM–1:51 PM
Presenter:
Xi Chen
(University of Colorado, Boulder)
Authors:
Xi Chen
(University of Colorado, Boulder)
Noel Anthony Clark
(University of Colorado, Boulder)
The "optical theorem" is the calculation of plane electromagnetic wave propagation through a transparent dielectric slab, that views the slab as a uniformly distributed collection of point scatterers in a vacuum. The theorem shows that the apparent index of refraction of the slab is the result of the interference of the net forward scattered light with the incident beam. We are exploring this effect for the case where the slab is a nematic liquid crystal, probing in particular the effect of the strong scattering by director fluctuations on refractive index, and thus on phase fluctuations in the outgoing radiation.
*This work was supported by the Soft Materials Research Center under NSF MRSEC Grant DMR-1420736.
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